/Engine/Source/Runtime/Engine/Classes/Components/HierarchicalInstancedStaticMeshComponent.h
Due to BulkSerialize we can't edit the struct, so we must deprecated this one and create a new one.
struct FClusterNode_DEPRECATED
FVector3f
BoundMax
FVector3f
BoundMin
int32
FirstChild
int32
FirstInstance
int32
LastChild
int32
LastInstance